[Phoenix Silicon International] Clarification of media reports as required by the competent authority

1. Date of occurrence: 2026/05/15 2. Company name: Phoenix Silicon International Corp. 3. Relationship to the Company (please enter "the company" or "subsidiaries"): The company 4. Reciprocal shareholding ratios: Not applicable 5. Name of media: Economic Daily News 6. Content of report: PSI has a bright outlook. In terms of EPS, institutions estimate it will significantly increase from NT$4.32 last year to NT$7.41 this year, and further increase to NT$10.13 next year; therefore, the target price is seen at NT$325. 7. Cause of occurrence: Required by the Stock Exchange on 2026/5/15 to clarify the media report. 8. Countermeasures: The company has not released any revenue or profit forecasts to the public. The above reports are solely the speculation of the media or institutions. Investors are advised to exercise cautious judgment. For financial and business information regarding the company, please refer to the announcements made by the company on the Market Observation Post System. 9. Any other matters that need to be specified: None